Swifts - NOT amateur radio

Swifts are gathering in great numbers. This evening there must have been 50 or more on the wing eating insects on the wing over our heads. Many must be this year's youngsters. In about a month most will be gone. The screaming will stop one day and we will realise the great migration has happened. It amazes me that these birds fly so far every year. Then we will have to wait until next April to see them again.